test: Add FiltersTests class with NUnit tests for Filters.FirstWithName (#902)

* Add FiltersTests class with NUnit tests for Filters.FirstWithName

Introduced a new test class `FiltersTests` in the `Appium.Net.Integration.Tests.helpers` namespace. The class is decorated with the `[TestFixture]` attribute and includes the following methods:
- `BeforeAll()`: Initializes the `AndroidDriver` and sets the implicit wait timeout.
- `SetUp()`: Starts the "ApiDemos" activity before each test.
- `FirstWithName_ReturnsCorrectElement()`: Verifies that `Filters.FirstWithName` returns the correct element.
- `AfterAll()`: Quits the `AndroidDriver` and stops the local Appium service if the server is not remote.

Necessary namespaces for NUnit, Selenium, and Appium are imported.

* Refactor namespaces and add using directive

Added `using` directive for `Appium.Net.Integration.Tests.helpers`.
Changed namespace from `Appium.Net.Integration.Tests.helpers` to
`Appium.Net.Integration.Tests.Android` for better organization.

* Fix typo in variable name in FirstWithName_ReturnsCorrectElement

* Simplify initialization of `capabilities` in `BeforeAll`

* Remove SetUp method that started ApiDemos activity

Author: Dor-bl

test/integration/Android/FiltersTests.cs

@@ -0,0 +1,61 @@
+//Licensed under the Apache License, Version 2.0 (the "License");
+//you may not use this file except in compliance with the License.
+//See the NOTICE file distributed with this work for additional
+//information regarding copyright ownership.
+//You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+//Unless required by applicable law or agreed to in writing, software
+//distributed under the License is distributed on an "AS IS" BASIS,
+//WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//See the License for the specific language governing permissions and
+//limitations under the License.
+
+using System.Collections.Generic;
+using NUnit.Framework;
+using OpenQA.Selenium.Appium.Android;
+using OpenQA.Selenium.Appium;
+using Appium.Net.Integration.Tests.helpers;
+
+namespace Appium.Net.Integration.Tests.Android
+{
+    [TestFixture]
+    public class FiltersTests
+    {
+        private AndroidDriver _driver;
+
+        [OneTimeSetUp]
+        public void BeforeAll()
+        {
+            var capabilities = Caps.GetAndroidUIAutomatorCaps(Apps.Get("androidApiDemos"));
+            var serverUri = Env.ServerIsRemote() ? AppiumServers.RemoteServerUri : AppiumServers.LocalServiceUri;
+            _driver = new AndroidDriver(serverUri, capabilities, Env.InitTimeoutSec);
+            _driver.Manage().Timeouts().ImplicitWait = Env.ImplicitTimeoutSec;
+        }
+
+        [Test]
+        public void FirstWithName_ReturnsCorrectElement()
+        {
+            var viewsElement = _driver.FindElement(MobileBy.AccessibilityId("Views"));
+
+            var textElement = _driver.FindElement(MobileBy.AccessibilityId("Text"));
+
+            var elements = new List<AppiumElement> { viewsElement, textElement };
+
+            var result = Filters.FirstWithName(elements, "Text");
+
+            Assert.That(result, Is.EqualTo(textElement));
+        }
+
+        [OneTimeTearDown]
+        public void AfterAll()
+        {
+            _driver?.Quit();
+            if (!Env.ServerIsRemote())
+            {
+                AppiumServers.StopLocalService();
+            }
+        }
+    }
+}